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| author | Clément Bœsch <ubitux@gmail.com> | 2012-11-14 22:37:30 +0100 |
|---|---|---|
| committer | Clément Bœsch <ubitux@gmail.com> | 2012-11-15 21:24:49 +0100 |
| commit | 8ea8833979d2ffa9b7a792a2a758144d9b2c3da2 (patch) | |
| tree | ef333f1c20831ea2eebbd9c5d20ddad284293e17 /libswresample/resample_template.c | |
| parent | e31b1938acbe8bd9c5e1dc4be674601ec6823bcf (diff) | |
| download | ffmpeg-8ea8833979d2ffa9b7a792a2a758144d9b2c3da2.tar.gz | |
swr/resample: move templating parameters to template itself.
It has various benefits such as allowing some refactoring, clarifying
the code in the inclusion part, and making the template understandable
in standalone.
This commit is based on the templating method used by Justin Ruggles for
libavresample.
Diffstat (limited to 'libswresample/resample_template.c')
| -rw-r--r-- | libswresample/resample_template.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/libswresample/resample_template.c b/libswresample/resample_template.c index 2ce97fa6ec..855296f243 100644 --- a/libswresample/resample_template.c +++ b/libswresample/resample_template.c @@ -25,6 +25,62 @@ * @author Michael Niedermayer <michaelni@gmx.at> */ +#if defined(TEMPLATE_RESAMPLE_DBL) +# define RENAME(N) N ## _double +# define FILTER_SHIFT 0 +# define DELEM double +# define FELEM double +# define FELEM2 double +# define FELEML double +# define OUT(d, v) d = v + +#elif defined(TEMPLATE_RESAMPLE_FLT) +# define RENAME(N) N ## _float +# define FILTER_SHIFT 0 +# define DELEM float +# define FELEM float +# define FELEM2 float +# define FELEML float +# define OUT(d, v) d = v + +#elif defined(TEMPLATE_RESAMPLE_S32) +# define RENAME(N) N ## _int32 +# define FILTER_SHIFT 30 +# define DELEM int32_t +# define FELEM int32_t +# define FELEM2 int64_t +# define FELEML int64_t +# define FELEM_MAX INT32_MAX +# define FELEM_MIN INT32_MIN +# define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\ + d = (uint64_t)(v + 0x80000000) > 0xFFFFFFFF ? (v>>63) ^ 0x7FFFFFFF : v + +#elif defined(TEMPLATE_RESAMPLE_S16) \ + || defined(TEMPLATE_RESAMPLE_S16_MMX2) \ + || defined(TEMPLATE_RESAMPLE_S16_SSSE3) + +# define FILTER_SHIFT 15 +# define DELEM int16_t +# define FELEM int16_t +# define FELEM2 int32_t +# define FELEML int64_t +# define FELEM_MAX INT16_MAX +# define FELEM_MIN INT16_MIN +# define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\ + d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v + +# if defined(TEMPLATE_RESAMPLE_S16) +# define RENAME(N) N ## _int16 +# elif defined(TEMPLATE_RESAMPLE_S16_MMX2) +# define COMMON_CORE COMMON_CORE_INT16_MMX2 +# define RENAME(N) N ## _int16_mmx2 +# elif defined(TEMPLATE_RESAMPLE_S16_SSSE3) +# define COMMON_CORE COMMON_CORE_INT16_SSSE3 +# define RENAME(N) N ## _int16_ssse3 +# endif + +#endif + int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int *consumed, int src_size, int dst_size, int update_ctx){ int dst_index, i; int index= c->index; @@ -149,3 +205,14 @@ av_log(NULL, AV_LOG_DEBUG, "%d %d %d\n", c->dst_incr, c->ideal_dst_incr, c->comp return dst_index; } + +#undef COMMON_CORE +#undef RENAME +#undef FILTER_SHIFT +#undef DELEM +#undef FELEM +#undef FELEM2 +#undef FELEML +#undef FELEM_MAX +#undef FELEM_MIN +#undef OUT |